Bring a large pot of water to boil over high heat. Stir the spaghetti into the boiling water and cook until pasta is cooked through, about 10 minutes. While spaghetti noodles are boiling crush bacon into small bits. Drain the cooked noodles and place in a bowl.
Add the bacon, shrimp, butter, rosemary, and seasoning salt to the pasta. Stir the pasta to coat with the sauce and serve.
Used different ingredients.
I bumped up the shrimp and the bacon to 1/2 pound shrimp and maybe 6 pieces of bacon. I used fresh shrimp and boiled them. I used thick bacon from my meat shop rather than packaged from the grocery store. These tweaks I employed may not make much difference.